//
//  Author:
//    Blake scifiboi@yahoo.com
//
//  Copyright (c) 2013, Daniel Blake Cogburn
//
//  All rights reserved.
//
//  Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
//
//     * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in
//       the documentation and/or other materials provided with the distribution.
//     * Neither the name of the [ORGANIZATION] nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
//
//  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
//  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
//  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
//  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
//  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
//  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
//  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
//  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
//  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
//  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
//  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
using System;

namespace ESCA
{
	/// <summary>
	/// Represents an 8-bit register
	/// </summary>
	public class Register8
	{
		private bool ReadOnly = false;
		private byte Value = 0;
		public byte ChangeValue(byte Change) //Returns the old value of the register or 0 if the register is readonly
		{
			if (!ReadOnly)
			{
				byte oldvalue = Value;
				Value = Change;
				return oldvalue;
			}
			else
				return 0;
		}
		public byte GetValue() //Returns the current value of the register
		{
			return Value;
		}
		public Register8(bool ReadOnly)
		{
			this.ReadOnly = ReadOnly;
		}
	}
	/// <summary>
	/// Represents a 16-bit register
	/// </summary>
	public class Register16
	{
		private bool ReadOnly = false;
		private short Value = 0;
		public short ChangeValue(short Change)//Returns the old value of the register or 0 if the register is readonly
		{
			if (!ReadOnly)
			{
				short oldvalue = Value;
				Value = Change;
				return oldvalue;
			}
			else
				return 0;
		}
		public short GetValue()//Returns the current value of the register
		{
			return Value;
		}
		public Register16(bool ReadOnly)
		{
			this.ReadOnly = ReadOnly;
		}
	}
}

